As per SMETA guidelines (see the printscreen below) the "Full Initial Audit" means the first time the site is audited, ideally when the site is re-audited again it is termed as "Full Follow up Audit". In SMETA report we do not have option as "Re-audit".
This is strange since Unilever do consider Re-audit as "Full Follow up audit" and not "Full Initial".
If the supplier has received email from Unilever you can request then to forward us so that we can get back to Elaine and Linnar of Unilever whom we are in contact to get the clarity.